Dell Precision R5400 (Mid 2008) - Manual (Page 40)

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Troubleshooting
4 Use the up- and down-arrow keys to select Diagnostics from the boot
menu and then press <Enter>.
The computer runs the Pre-boot System Assessment (PSA), a series of
initial tests of your system board, keyboard, display, memory, hard drive,
and so on.
• Answer any questions that appear.
• If failures are detected, write down the error code(s) and see
"Contacting Dell" on page 370.
• If the Pre-boot System Assessment completes successfully, the
following message appears: "
Booting Dell Diagnostic
Utility Partition. Press any key to continue ."
NOTE:
If you see a message stating that no diagnostics utility partition has
been found, run the Dell Diagnostics from your Drivers and Utilities media (see
"Starting the Dell Diagnostics From the Drivers and Utilities Media" on
page 41).
5 Press any key to start the Dell Diagnostics from the diagnostics utility
partition on your hard drive.
6 Press <Tab> to select Test System and then press <Enter>.
NOTE:
It is recommended that you select Test System to run a complete test
on your computer. Selecting Test Memory initiates the extended memory test,
which can take up to thirty minutes or more to complete. When the test
completes, record the test results and then press any key to return to the
previous menu.
7 At the Dell Diagnostics Main Menu, left-click with the mouse, or press
<Tab> and then <Enter>, to select the test you want to run (see "Dell
Diagnostics Main Menu" on page 42).
NOTE:
Write down any error codes and problem descriptions exactly as they
appear and follow the instructions on the screen.
8 After all tests have completed, close the test window to return to the Dell
Diagnostics Main Menu.
9 Close the Main Menu window to exit the Dell Diagnostics and restart the
computer.